just got a 92 LX 5.0 with a bunch of engine mods. Problem I am having is when you go to push the pedal to accelerate its hard to push and when you finally push it hard enough it goes down real fast causing the car to jerk. Its hard to drive it smooth this way. I think its a problem with the edlebrock throttle body. Its not the throttle cable cause when the car is off the pedal works real smooth. Any Ideas???

 

my 87 did this but it was my cable she was jerking like i didn't know how to drive but i'm guessing your cable mine was fine also when car was off if you want take it off cable and spay a lube in cable and work cable back and forth before wast your money

 

Its the shitty throttle body edlebrock/bbk. I'f I lube the butterfly plate in the tb the throttle works so smooth for a week then when the lube evaporates its back to binding and jerking